aboutsummaryrefslogtreecommitdiffstats
path: root/src/media/UAudioCore_Bass.pas
diff options
context:
space:
mode:
authortobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2010-10-10 22:59:33 +0000
committertobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2010-10-10 22:59:33 +0000
commit35187604cef84864a908972d07361a5bd57e29ca (patch)
treedc95a8b1abeabd3a466729056ab8d37aaa6e72ea /src/media/UAudioCore_Bass.pas
parent58c1daf3692d4c5c534750a4fda97e087b0f0cbb (diff)
parent02bd10f0798829ab69d2028b988cb2a54eae292a (diff)
downloadusdx-35187604cef84864a908972d07361a5bd57e29ca.tar.gz
usdx-35187604cef84864a908972d07361a5bd57e29ca.tar.xz
usdx-35187604cef84864a908972d07361a5bd57e29ca.zip
rename trunk to 1.1svn/1.1github/svn/1.1
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/1.1@2662 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'src/media/UAudioCore_Bass.pas')
-rw-r--r--src/media/UAudioCore_Bass.pas177
1 files changed, 177 insertions, 0 deletions
diff --git a/src/media/UAudioCore_Bass.pas b/src/media/UAudioCore_Bass.pas
new file mode 100644
index 00000000..3a84dcd7
--- /dev/null
+++ b/src/media/UAudioCore_Bass.pas
@@ -0,0 +1,177 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit UAudioCore_Bass;
+
+interface
+
+{$IFDEF FPC}
+ {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+ Classes,
+ SysUtils,
+ UMusic,
+ bass; // (Note: DWORD is defined here)
+
+type
+ TAudioCore_Bass = class
+ public
+ constructor Create();
+ class function GetInstance(): TAudioCore_Bass;
+ function CheckVersion(): boolean;
+ function ErrorGetString(): string; overload;
+ function ErrorGetString(errCode: integer): string; overload;
+ function ConvertAudioFormatToBASSFlags(Format: TAudioSampleFormat; out Flags: DWORD): boolean;
+ function ConvertBASSFlagsToAudioFormat(Flags: DWORD; out Format: TAudioSampleFormat): boolean;
+ private
+ function DecodeVersion(VersionHex: integer): string;
+ end;
+
+implementation
+
+uses
+ UMain,
+ ULog;
+
+const
+ // BASS 2.4.2 is not ABI compatible with older versions
+ // as (BASS_RECORDINFO.driver was removed)
+ BASS_MIN_REQUIRED_VERSION = $02040201;
+
+var
+ Instance: TAudioCore_Bass;
+
+constructor TAudioCore_Bass.Create();
+begin
+ inherited;
+end;
+
+class function TAudioCore_Bass.GetInstance(): TAudioCore_Bass;
+begin
+ if (not Assigned(Instance)) then
+ Instance := TAudioCore_Bass.Create();
+ Result := Instance;
+end;
+
+function TAudioCore_Bass.DecodeVersion(VersionHex: integer): string;
+var
+ Version: array [0..3] of integer;
+begin
+ Version[0] := (VersionHex shr 24) and $FF;
+ Version[1] := (VersionHex shr 16) and $FF;
+ Version[2] := (VersionHex shr 8) and $FF;
+ Version[3] := (VersionHex shr 0) and $FF;
+ Result := Format('%x.%x.%x.%x', [Version[0], Version[1], Version[2], Version[3]]);
+end;
+
+function TAudioCore_Bass.CheckVersion(): boolean;
+begin
+ Result := BASS_GetVersion() >= BASS_MIN_REQUIRED_VERSION;
+ if (not Result) then
+ begin
+ Log.LogWarn('Could not init BASS audio library. ''bass.dll'' version is ' + DecodeVersion(BASS_GetVersion()) + ' but ' + DecodeVersion(BASS_MIN_REQUIRED_VERSION) + ' or higher is required.',
+ 'TAudioCore_Bass.CheckVersion');
+ end;
+end;
+
+function TAudioCore_Bass.ErrorGetString(): string;
+begin
+ Result := ErrorGetString(BASS_ErrorGetCode());
+end;
+
+function TAudioCore_Bass.ErrorGetString(errCode: integer): string;
+begin
+ case errCode of
+ BASS_OK: result := 'No error';
+ BASS_ERROR_MEM: result := 'Insufficient memory';
+ BASS_ERROR_FILEOPEN: result := 'File could not be opened';
+ BASS_ERROR_DRIVER: result := 'Device driver not available';
+ BASS_ERROR_BUFLOST: result := 'Buffer lost';
+ BASS_ERROR_HANDLE: result := 'Invalid Handle';
+ BASS_ERROR_FORMAT: result := 'Sample-Format not supported';
+ BASS_ERROR_POSITION: result := 'Illegal position';
+ BASS_ERROR_INIT: result := 'BASS_Init has not been successfully called';
+ BASS_ERROR_START: result := 'Paused/stopped';
+ BASS_ERROR_ALREADY: result := 'Already created/used';
+ BASS_ERROR_NOCHAN: result := 'No free channels';
+ BASS_ERROR_ILLTYPE: result := 'Type is invalid';
+ BASS_ERROR_ILLPARAM: result := 'Illegal parameter';
+ BASS_ERROR_NO3D: result := 'No 3D support';
+ BASS_ERROR_NOEAX: result := 'No EAX support';
+ BASS_ERROR_DEVICE: result := 'Invalid device number';
+ BASS_ERROR_NOPLAY: result := 'Channel not playing';
+ BASS_ERROR_FREQ: result := 'Freq out of range';
+ BASS_ERROR_NOTFILE: result := 'Not a file stream';
+ BASS_ERROR_NOHW: result := 'No hardware support';
+ BASS_ERROR_EMPTY: result := 'Is empty';
+ BASS_ERROR_NONET: result := 'Network unavailable';
+ BASS_ERROR_CREATE: result := 'Creation error';
+ BASS_ERROR_NOFX: result := 'DX8 effects unavailable';
+ BASS_ERROR_NOTAVAIL: result := 'Not available';
+ BASS_ERROR_DECODE: result := 'Is a decoding channel';
+ BASS_ERROR_DX: result := 'Insufficient version of DirectX';
+ BASS_ERROR_TIMEOUT: result := 'Timeout';
+ BASS_ERROR_FILEFORM: result := 'File-Format not recognised/supported';
+ BASS_ERROR_SPEAKER: result := 'Requested speaker(s) not support';
+ BASS_ERROR_VERSION: result := 'Version error';
+ BASS_ERROR_CODEC: result := 'Codec not available/supported';
+ BASS_ERROR_ENDED: result := 'The channel/file has ended';
+ BASS_ERROR_UNKNOWN: result := 'Unknown error';
+ else result := 'Unknown error';
+ end;
+end;
+
+function TAudioCore_Bass.ConvertAudioFormatToBASSFlags(Format: TAudioSampleFormat; out Flags: DWORD): boolean;
+begin
+ case Format of
+ asfS16: Flags := 0;
+ asfFloat: Flags := BASS_SAMPLE_FLOAT;
+ asfU8: Flags := BASS_SAMPLE_8BITS;
+ else begin
+ Result := false;
+ Exit;
+ end;
+ end;
+
+ Result := true;
+end;
+
+function TAudioCore_Bass.ConvertBASSFlagsToAudioFormat(Flags: DWORD; out Format: TAudioSampleFormat): boolean;
+begin
+ if ((Flags and BASS_SAMPLE_FLOAT) <> 0) then
+ Format := asfFloat
+ else if ((Flags and BASS_SAMPLE_8BITS) <> 0) then
+ Format := asfU8
+ else
+ Format := asfS16;
+
+ Result := true;
+end;
+
+end.